Here are some cool apps I’ve used which will help any entrepreneur. Enjoy!

This is one of my favorite online apps for small business owners and independent contractors. It allows for invoice creation, tracking and collection. It’s done completely online and its simple to use. Because of its professional look and streamlined operation, this tool will help improve the perception your clients have of you.

If you’re not already using Gmail or Google Calendar…start. It’s simple in that Google way and very powerful. Cool features include: Users can share their calendars with others and post events on other’s calendars, and it runs on Google’s servers which means it can be accessed from any device or desktop.

Campfire is like instant messaging, but designed exclusively for groups. There’s a few sites out there like this. Google Wave is another that just came out, but Campfire has been around a while. There’s nothing to install and it’s very secure. You can share text, files, and code in real time. You can also conduct business negotiations with a group.

An very simple app that has saved my butt many times. It basically an online calendar on steroids. Setup it up to remind you about tasks or events via sms, email, instant messenger, skype etc.

I love this app! I’m all about sticky notes, so this is a dream for me. It allows you to place sticky notes on actual webpages. Then you can go back any time and look at the notes you left. If you do a lot of online research (bloggers, etc.), this may prove to be an invaluable app.

This is a fascinating concept that seems to be working very well. You essentially upload all of your bank-account and credit-card information, and the site maintains a running list of every transaction. Other Wesabe users can observe your spending habits and offer advice on what you should do or change. Scary but effective!

Another great tool for the independent contractor or someone who does a little work on the side. This site will hand your tracking, invoicing and reporting. It takes a very tedious task and makes it simple.

A great app for anyone that doesn’t have their TI-82 anymore. It is a highly intuitive online calculator that can actually be quite fun to use.